EP1780311B1 - Procédé de fabrication d'une surface matte-satinée - Google Patents

Procédé de fabrication d'une surface matte-satinée Download PDF

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Publication number
EP1780311B1
EP1780311B1 EP05109770A EP05109770A EP1780311B1 EP 1780311 B1 EP1780311 B1 EP 1780311B1 EP 05109770 A EP05109770 A EP 05109770A EP 05109770 A EP05109770 A EP 05109770A EP 1780311 B1 EP1780311 B1 EP 1780311B1
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EP
European Patent Office
Prior art keywords
layer
matt
workpiece
sulfamate
galvanic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP05109770A
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German (de)
English (en)
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EP1780311A1 (fr
Inventor
Wolf-Dieter Franz
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to EP05109770A priority Critical patent/EP1780311B1/fr
Priority to ES05109770T priority patent/ES2306023T3/es
Priority to AT05109770T priority patent/ATE394526T1/de
Priority to DE502005004040T priority patent/DE502005004040D1/de
Priority to US12/083,843 priority patent/US8105473B2/en
Priority to PCT/EP2006/067618 priority patent/WO2007045688A1/fr
Publication of EP1780311A1 publication Critical patent/EP1780311A1/fr
Application granted granted Critical
Publication of EP1780311B1 publication Critical patent/EP1780311B1/fr
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
    • C25D5/611—Smooth layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance

Definitions

  • the present invention relates to the production of satin surfaces of workpieces, in particular automotive parts.
  • Galvanic processes are also known in which galvanic Ni layers are given an adjustable silk mattness by adding to the galvanic solution an organic additive which drops onto the surface like a droplet and leads to disturbances of the surface structure.
  • the degree of dullness or silk gloss must be set relatively inconveniently over the added amounts before starting a process and the organic additives must be filtered in a process interruption before a new process start, so as not to disturb the new process.
  • the setting mentioned must therefore be repeated with each new process start-up and is therefore complicated and disadvantageous in terms of reproducibility.
  • the invention is based on the technical problem of specifying an alternative method for producing satin matt metal surfaces on workpieces.
  • the basic idea of the invention is to apply a matt Ni layer on a smooth workpiece surface and to adjust the mattness over the thickness of the Ni layer.
  • the invention is directed to galvanic Ni layers in which no organic matting additives are used. Rather, in a preferred embodiment of the invention may be a known Wattsche Ni layer, which is technically simple and easy to control.
  • the degree of gloss or degree of matting can be determined by various galvanic parameters, in particular by treatment time and / or Amperage, easy and well adjustable control. The need to filter the solutions for filtering organic matting additives is also eliminated.
  • the abovementioned sulfamate-Ni layer is preferably protected against environmental influences by means of a further finishing layer, it being understood that this finishing layer can also have a decorative function.
  • a galvanic Cr layer which may have a thickness between 0.1 and 3 microns, with a lower limit of 0.5 microns or an upper limit of 1 micron is particularly preferred.
  • a conventional and available through commercially available solutions gloss chrome process can be used because the satin finish of the surface is already present.
  • the matte galvanic Ni layer is preferably applied as a known and technically well-controlled Wattsche Ni layer, ie as a galvanic Ni layer without organic matting additives.
  • Current strengths in the range of 0.1 to 2 A / dm 2 , better 0.1 to 1 A / dm 2 are preferred here.
  • the layer thickness of the matt layer should be comparatively low and may be between 0.05 and 5 .mu.m, with upper limits of 4 .mu.m, 3 .mu.m, 2 .mu.m and more preferably 1 .mu.m and lower limits of 0.075 .mu.m and more preferably 0.1 .mu.m even cheaper.
  • the layer thickness is ultimately determined by optical / aesthetic considerations.
  • a favorable thickness for the suifamate Ni layer is in the range of 5 and 20 microns, with a lower limit of 10 and an upper limit of 15 microns are more preferred. It has already been mentioned that a protective topcoat is preferred. If the metallic Ni color is of interest, a clearcoat can also be used here.
  • a particular advantage of the invention in addition to the good optical properties and the good resilience and dirt resistance of surfaces according to the invention is that can be adjusted by galvanic parameters in a very simple manner, the degree of gloss or matte degree.
  • Different optical properties can be generated with one and the same basic process, that is, the same solution compositions, identical baths, etc. In particular, from batch to batch simply over the amperage, or even cheaper about the treatment time, the dullness are set. The thicker the matte Ni layer, the higher the matte degree.
  • FIG. 1 schematically shows a surface of the plastic door handle 1. On this surface is in accordance with FIG. 2 in a conventional manner, a bright Ni layer 2 deposited.
  • the surface of the plastic door handle can be previously germinated and prepared, for example, with a chemically deposited thin metal layer for the electroplating process.
  • the glossy Ni layer 2 is deposited in a standard electroplating process at 2 A / dm 2 from an aqueous solution containing about 180 g / l nickel sulfate, about 150 g / l nickel chloride and about 50 g / l boric acid as a pH buffer and at Gloss Ni baths contains commercially available organic brighteners.
  • the bath Slotonik-50 of the company Schlötter comes into consideration.
  • the purpose of the glossy Ni layer 2 is to provide a glossy base that is as error-free as possible, and is distinguished by its good ability to level initially existing imperfections.
  • Their thickness is not really essential to the subsequent process and depends, on the one hand, on the overall material thickness targeted, especially with regard to durability, and on the surface defects to be leveled. Typical orders of magnitude are in the range of 10-30 microns.
  • a matte Wattsche Ni layer 3 applied on the bright Ni layer 2 is according to FIG. 3 .
  • This is carried out at a current density of about 0.5 A / dm 2 from an aqueous solution containing 210 g / l nickel sulfate, 35 g / l nickel chloride and 40 g / l boric acid without further additives.
  • the preferred layer thickness range is between 0.1 and 1 ⁇ m, wherein the mattness of the finally resulting layer is adjusted via the layer thickness. In this embodiment, 0.2 microns are deposited.
  • FIG. 3 illustrates that this layer thickness only makes sense in terms of averaging.
  • the growth is very grainy or "bulbous”, with the in FIG. 3 schematically drawn individual grains with increasing average layer thickness are larger and have decreasing average distances. At significantly greater layer thicknesses, the grains are finally close, resulting in a matte layer that does not let the gloss of the underlying gloss Ni layer 2 through.
  • a 12 ⁇ m thick layer is deposited at a galvanic current density of 1 A / dm 2 .
  • the aqueous solution contains 36% by volume of 60% by weight nickel sulphamate solution.
  • the galvanic solution contains 5 g / l nickel chloride and 35 g / l boric acid. Considered, for example, the bathroom Schlötter MS.
  • FIG. 5 shows, optionally applied a finishing layer.
  • this is a conventional gloss Cr layer 5 of thickness 1.5 .mu.m.
  • the overall layer is well protected against environmental influences and resistant to oxidation. It ultimately shows a metallic Cr gloss, which is desirable here. Due to the somewhat rounding properties of the sulfamate-Ni layer, the sensitivity to dirt and the roughness are significantly improved and well suited for applications in the interior of motor vehicles.
  • the exemplary embodiment is a simple process control with a control of the essential layer properties over the treatment time, in particular a control of the mattness of the resulting silk gloss over the time of the Watt's nickel process.
  • the described disadvantages of organic matting additives omitted. The process is thus practicable, easy to reproduce and inexpensive.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Glass Compositions (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Claims (14)

  1. Procédé de réalisation d'une surface métallique satinée sur une pièce usinée (1), comportant les étapes de:
    - réalisation d'une surface lisse (2) sur une pièce usinée (1),
    - application d'une couche mate de Ni (3) par dépôt galvanique sans additifs de matage organiques,
    - application d'une couche de Ni-sulfamate (4).
  2. Procédé selon la revendication 1, comportant l'étape supplémentaire de : application d'une autre couche de finition (5) sur la couche de Ni-sulfamate (4).
  3. Procédé selon la revendication 2, dans lequel la couche de finition est une couche galvanique de Cr (5).
  4. Procédé selon la revendication 2 ou 3, dans lequel la couche de finition (5) a une épaisseur comprise entre 0,1 et 3 µm.
  5. Procédé selon une des revendications précédentes, dans lequel la surface lisse de la pièce usinée est réalisée par dépôt galvanique d'une couche de Ni brillante (2).
  6. Procédé selon la revendication 5, dans lequel la densité de courant sur la pièce usinée est comprise entre et 7, et 3 A/dm2 pendant le dépôt galvanique.
  7. Procédé selon une des revendications précédentes, dans lequel la couche de Ni, mate est appliquée sous forme de couche de Ni de Watt (3).
  8. Procédé selon la revendication 7, dans lequel la densité de courant sur la pièce usinée est comprise entre et 0,1 et 2 A/dm2 pendant l'application de la couche de Ni de watt (3).
  9. Procédé selon une des revendications précédentes, dans lequel la couche de Ni mate (3) a une épaisseur comprise entre 0,05 et 5 µm.
  10. Procédé selon une des revendications précédentes, dans lequel la densité de courant sur la pièce usinée est comprise entre 0,1 et 2 A/dm2 pendant l'application de la couche de Ni-sulfamate (4).
  11. Procédé selon une des revendications précédentes, dans lequel la couche de Ni-sulfamate (4) a une épaisseur comprise entre 5 et 20 µm.
  12. Procédé selon une des revendications précédentes, dans lequel la pièce usinée (1) est une pièce d'automobile (1) et la surface métallique satinée est une surface décorative de la pièce d'automobile (1), destinée notamment à l'habitacle d'une automobile.
  13. Procédé de réalisation de surfaces métalliques satinées sur une pluralité de pièces usinées (1), incluant un procédé selon une des revendications précédentes, dans lequel les surfaces métalliques (1) réalisées ont des matités différentes et les différentes matités sont définies par des épaisseurs différentes de la couche de Ni mate (3).
  14. Procédé selon la revendication 13, dans lequel les épaisseurs respectives de la couche de Ni mate (3) sont définies par la durée du dépôt galvanique.
EP05109770A 2005-10-20 2005-10-20 Procédé de fabrication d'une surface matte-satinée Active EP1780311B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP05109770A EP1780311B1 (fr) 2005-10-20 2005-10-20 Procédé de fabrication d'une surface matte-satinée
ES05109770T ES2306023T3 (es) 2005-10-20 2005-10-20 Produccion de superficies metalicas mates como la seda.
AT05109770T ATE394526T1 (de) 2005-10-20 2005-10-20 Herstellung seidenmatter metalloberflächen
DE502005004040T DE502005004040D1 (de) 2005-10-20 2005-10-20 Herstellung seidenmatter Metalloberflächen
US12/083,843 US8105473B2 (en) 2005-10-20 2006-10-20 Production of satin metal surfaces
PCT/EP2006/067618 WO2007045688A1 (fr) 2005-10-20 2006-10-20 Procede pour produire des surfaces metalliques satinees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05109770A EP1780311B1 (fr) 2005-10-20 2005-10-20 Procédé de fabrication d'une surface matte-satinée

Publications (2)

Publication Number Publication Date
EP1780311A1 EP1780311A1 (fr) 2007-05-02
EP1780311B1 true EP1780311B1 (fr) 2008-05-07

Family

ID=35976738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05109770A Active EP1780311B1 (fr) 2005-10-20 2005-10-20 Procédé de fabrication d'une surface matte-satinée

Country Status (6)

Country Link
US (1) US8105473B2 (fr)
EP (1) EP1780311B1 (fr)
AT (1) ATE394526T1 (fr)
DE (1) DE502005004040D1 (fr)
ES (1) ES2306023T3 (fr)
WO (1) WO2007045688A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2488560A (en) * 2011-03-01 2012-09-05 Bentley Motors Ltd Vehicle trim components
US8529747B2 (en) * 2011-07-12 2013-09-10 The Boeing Company Methods for repairing steel components
FR3004735B1 (fr) * 2013-04-23 2015-07-03 Dourdin Procede de vernissage de pieces metallisees
DE202013010250U1 (de) 2013-05-10 2013-11-26 Oerlikon Trading Ag, Trübbach Glanzgradeinstellung von Kunststoffsubstraten mit metallischen Finish
EP3170925B1 (fr) * 2015-11-23 2019-09-25 Franz GmbH Procede de fabrication d'une surface metallique
CN110760789A (zh) * 2019-11-04 2020-02-07 丽水市建川五金制造有限公司 一种表面处理门把手的表面精细处理工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US926800A (en) * 1908-08-31 1909-07-06 Henry V Young Cover for automobile transmission-gears.
NL125957C (fr) * 1960-07-26
US3090733A (en) * 1961-04-17 1963-05-21 Udylite Res Corp Composite nickel electroplate
NL279109A (fr) * 1962-05-30
NL287612A (fr) * 1963-01-09
GB1074389A (en) * 1964-12-15 1967-07-05 Res Holland Nv Improvements in or relating to nickel electro plating
GB1515361A (en) * 1975-07-09 1978-06-21 Electrofoils Ltd Metal finishing of metallic foils by electrodeposition
JPH01309997A (ja) * 1988-06-09 1989-12-14 Kanto Kasei Kogyo Kk 耐食性に優れた銅−ニッケル−クロム光沢電気めっき方法およびそれにより得られためっき皮膜
AU2003901058A0 (en) * 2003-03-10 2003-03-20 Microtechnology Centre Management Limited Electroplating pcb components
DE10316612B4 (de) 2003-04-11 2006-06-29 Hille & Müller GMBH Elektrolytisch beschichtetes Kaltband, Verfahren zur Beschichtung desselben sowie Batteriehülse

Also Published As

Publication number Publication date
US20090211913A1 (en) 2009-08-27
EP1780311A1 (fr) 2007-05-02
US8105473B2 (en) 2012-01-31
DE502005004040D1 (de) 2008-06-19
ES2306023T3 (es) 2008-11-01
ATE394526T1 (de) 2008-05-15
WO2007045688A1 (fr) 2007-04-26

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